Non-contact life sign monitoring system
A vital sign and monitoring system technology, applied in the field of radar, can solve problems such as restricting the application range and inconvenient post-processing of vital sign information, and achieve the effect of improving reliability and accuracy
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0035] Embodiment 1 uses the LMS algorithm: at the initial stage of the original input of the vital sign signal, adaptive filtering starts, the autocorrelation estimation error is large, and the step size μ(n) (learning rate) is also relatively large. Then search along the negative direction of the gradient estimation of the weight value. When the weight coefficient is getting closer to the optimal weight coefficient (reference value of the vital sign signal), the error of the autocorrelation coefficient is also getting smaller and closer to zero, step by step. The length is also getting smaller and smaller. Due to the large initial value of μ(n), rapid convergence occurs, and at the same time, due to the small value of μ(n) in the later stage, a small steady-state disorder occurs near the optimal value, making the final sign data more accurate.
Embodiment 2
[0036] Embodiment 2 adopts the RLS algorithm: in conjunction with the attached image 3 , the body surface micro-movement signal caused by respiration and heartbeat is selected as the original input signal U(n), and the simulated vital sign signal is used as the reference signal d(n). Design a transversal filter with a time-varying tap weight vector W(n), and adjust the tap weight vector of the filter according to the principle of the minimum weighted square sum of the error signal ε(n) between the output signal of the filter and the reference signal , through the recursive iterative operation, the filter output is the best output that satisfies the principle of the algorithm, which is the vital sign signal to be extracted.
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com